We are getting an H4-00 error code. We know it is either blown a fuser lamp or the thermo fuse is bad. The tech is now saying replacement of the entire fuse assembly is necessary and now we have to wait on him to order it and then come fix it. Does anyone know of a quick fix until he can reinstall the assembly? Is replacement the only way to fix it? We are a law office and this is our only copier and fax machine. We are down without it. Please help!!!
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You have blown your thermal fuse, causing an open circuit.
You have to remove the fuser and remove the thermal fuse. It is very easy to get it, it looks like a round black stump with a shiny bottom with 2 space terminals at each end, the bracket should be white, you cant miss it.
remove the thermistor and throw it hard on the concrete outside, you will not break it, what you are looking for is to make it rattle again, once it rattles again, re-install.. and clear the error code..
To do this you will have to do the following; Press 'stop/reset' then 'start' then left copy exposure button and hold them all down. This will enter simulation/tech mode.
Enter '163' you do this by pressing the + and - buttons (zoom buttons)
Then Error code means that the fuser / fixing Lamp is blown or it could be the thirmal fuse is blown. It could also a bad thirmister, that may have caused the fuse to blow. One thing you can look at, will the fixing unit get warm or hot. Do you know any copier techs, as a friend. It is not a easy job to fix this problem. You have to fix it to clear it.... Good Luck
Press 0 and 8 down before you turn on the machine, holding these down turn on copier, the display should say "ad" press 89 then start ( display will say 3 ) press 0 then start display goes back to "ad" turn off and on copier if wrench comes back take off red cover over hot section and in the middle there is a thermostat (1 screw) and toner build up under it needs to be removed.
Well, I'm sorry to say that you're going to need a tech for this problem. You have a fuser problem...either a blown fuse, heater lamp, thermistor, or something...whatever the cause, the fuser is not heating up. And the code can only be reset within service mode, once the problem is repaired.
Hello, the C5 code will only show up after the C7 code -- Fuser temp. to low. First put a meter on the Thermal fuse and the Thermistor and see if it is blown. The fuse and thermistor are under the black ( usually) fuser cover which runs the lenght of the fuser. If the fuse and /or thermistor are blown, replace. The lamp will not come on if the fuse or thermistor are blown. If the fuse and thermistor are good then take the end cap off of the fuser ( usually 1 screw) and disconnect the brass (usually) from the lamp. Check the lamp ( continuity), is the lamp okay. If not replace the lamp. If all of these are good then check the Solid state relay unit ( usually in the lower right hand side looking at the back of the machine with cover off). If the relay is good then you have to replace the PWB-A, the main board.